Back in a bikini! Melissa Joan Hart is clearly feeling more confident than ever since she recently shed 40 pounds. The TV star showed off her weight loss in a sexy new Instagram photo on Wednesday.

In the side-by-side pic, the Melissa & Joey star covers up at first with a giant floppy hat, which she late removes to reveal a pink bikini — and toned bod! “It’s not everyday I like to show a lot of skin but these days I’m feeling confidant,” she wrote. “Thanks Nutrisystem!”

The 37-year-old mom admittedly gained 60 pounds during her most recent pregnancy — she gave birth to son, Tucker, in September 2012. She started Nutrisystem in February 2013.